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МатематикаВопрос:
4 Read the sentence pairs. Choose which word or phrase best fits each blank. 1 exhaust stroke / compression stroke A The increased the pressure inside the cylinder. B The engine released the burnt fuel during thei ۱ 2 pressure / exnanot A Most cars have tailpipes for releasing_p B Raising the cylinder's makes it more efficient. 3 head gasket / intake valve A The CENO seals the cylinder head to the engine. B The fuel entered the cylinder through the
Ответ:
Ответ:
1. B. The engine released the burnt fuel during the exhaust stroke. 2. A. Most cars have tailpipes for releasing pressure. 3. A. The head gasket seals the cylinder head to the engine.Ответ: 1 - exhaust stroke, 2 - pressure, 3 - head gasket
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- Listening 6 Listen to a conversation between two mechanics. Choose the correct answers. 1 What are the speakers mainly talking about? A what fuel an engine uses B how four-stroke engines function C what is causing an engine problem D how they should repair an engine 2 What will the woman do next? A order new spark plugs B test the engine C increase the fuel pressure D get a few tools
- Listen again and complete the conversation. Mechanic 1: It looks like the engine completes 1 _______________, though. Mechanic 2: Right. Then it 2 _______________ the compression stroke. But then it stops. Mechanic 1: Do you think the spark plug is 3 _______________ the gas? Mechanic 2: I thought of that. I tested a new one and the same thing happened. I have another idea, though. Mechanic 1: What's that? Mechanic 2: I think it's leaking fuel in 4 _______________ Mechanic 1: So there isn't 5 _______________ or fuel to set off the explosion? Mechanic 2: Precisely. That could also prevent 6 _______________from occurring.
